Gearing for hoisting drums



March 19, 1929.

A. L. DODGE GEARING FOR HOISTING DRUMS A TTORNEY.

March 1.9, vv1929. A. 1 DODGE 1,706,109

GEARING FOR HoIsTING DRUMS Filed July 21, 1927 y2 sheets-sheet 2Infernal INVENTOR,

)Wh/ff. 900376,

A TTORNE Y.

Patented Mar. 19, 1929.

ARTHUR L. DODGE, 0F SPRINGFIELD, MASSACHUSETTS.

GEARING FOR HOISTING DRUMS.

Application filed July 21,

This invention relates to improvements in gearing for hoisting drums. Anobject of theinvention is to provide a gearing construction which willpermit the use of an internal combustion engine, as a motive power. Itis a well known fact that the load can not be suddenly thrown on to suchan engine without stalling or nearly stalling the same. Engine clutchdevices are used to connect the load with the crankshaft of the enginein order to permit the load to be gradually applied. Y The presentinvention is therefore designed to apply this principle to a hoistingdrum. Y

,.Broaclly, the present invention employs a' system of gearing of theplanetary type in which the sun gear'is secured to a shaft which isconnected to the internal combustion engine. f This .gear meshes withand turns a seriesof gears that are mounted on a plate or disk that iskeyed to the driven shaft which operates or carries the hoisting drum.These twoshafts, that is to say the driving and driven shafts have acommon bearing, one within the other, at their meeting ends. An internalgear ring is rotatably mounted on the said plate and with which theplanet gears engage. This gear ring is surrounded by a biake band forpermitting the4 gear ring to run freely or to retain it in a fixedposition. Secured to the second shaft is a brake drum, and around whichis located a brake band. `Means are provided for connecting the twobrake bands together in order that they may be operated at the sametime. The construction and arrangement of the connection between the`bands is such that one band may be tightened and the other loosened andvice versa, for gradually applying and removing the load on the internalcombustion engine.

Referring to the drawings:

Fig. 1 is a vertical sectional view considered in a vertical planepassing through the axis, of the machine, showing the driving and thedriven shafts, the two brake drums, the internal ring gear and the sunand planet gears, and Y Fig. 2 is a transverse sectional view on theline 2-2 of Fig. 1 looking` in the direction of the arrows, illustratingthe driving shaft, the sun gear thereon, the planet gears, and also thelever means'for operating the two brake bands. Y l

Referring to the drawingsin detail:

1 designates the driving shaft, which is 1927. Serial No. 207,408.

Connected to the internal combustion engine, as indicated at 36, 2 is adriven shaft. These shafts have a common bearing, one within they otheras indicated at 3. 4 is a supporting casing for providing bearing boXes5 and G for the shafts 1 and 2; it is understood that the shaft 2 isconnected to the hoisting drum indicated at 7, 3 designates the cablethereon. Secured to the shaft 1 by means of the key 9 is a sun gear 10.This gear meshes with the series of planet gears 11, which gears, 11,are rotatably mounted in the plate or disk 12, which is keyed to thedriven shaft 2 as shown at 13. The gears 11 are mounted on the bear# ingpins 14e in the. plate 12, at one end, and secured to the other oropposite ends of the pins `are bearing rings 15. The gears 11 mesh withthe internal teeth of the gear ring 16. This ring is secured to thevoppositely located disk plates 17 and 18, which plates have a bearingon the sun gear 10 at 19 and on the plate 12 at 20.

Surroundingthe outer surface of the internal gear` ring 1G is a brakeband 21. 22 is a hand lever that is connected to the brake band 21 bynica-ns of the link 23, which is attached to the offset arm at one endand to the bracket 23 at its other end. 24; are two bolts that areconnected to the brake band 21 by means of the flange and boltconnections 25 for supporting the bandsI around the drum. TheseVconnections are clearly indicated in Fig. 2. v The manual lever 22 isconnected to the shaft 25 as indicated by the key at 26. This shaft hasa bearing in the part- 27. The opposite ends of the shaft is keyed tothe collar 23, as indicated at 29. This collar is Connected to the brakeband by means of the link 31, which is connected to the arm 2S. Thebrake band 30 is supported about the brake drum 32 by means of the bolts33, the brake drum 32 is keyed to the shaft 2 as indicated at 34. Thelever 22 is formed at its lower ends with an angular offset arm portion35, to which the link 23 is connected. The offset part 2S is an armwhich is located in an angular relation to the fixed arm 35 which isshown in Fig. 2, in dotted line position.

The purpose of the offset angular relation of the arms 28 and 35 is tocause one of the brake bands as 21 to grip the internal gear ring 16 andto release the brake band 30 on the brake drum 32 as the lever 22 isoperated, or in other words one drum is held against movement while theother is rotated freely.

The operation is described as follows; Consider the shaft 1- as beingvcontinuously driven by the combustion engine as indicatedy at 36. Also,consider the .brake yband21 asv being released. The sun gear Will rotatethe planet gears 11, these in turn :Will rotate the plate or disk 16 andthe (fear ring 16 Will in turn rotate the disks 1+ and 18 on- Y internal-gear ring 16, which causes the vplate f the `reverse operation forstopping the drum 12 to be operated and -this in turn Will turn theshaft 2 through the key 13 and operate the drum 7. VVSince the brakeband 30 is now released vthe drum 32 will rotate idly. In

7, the lever 22 is moved in the opposite direction causing the vdrum 32to be held securely, andthe internal gear ring 16 to revolve idl-y andthe plates 17 and 18 will turn onv the bearings -19 and 20.V f

It will therefore be seen thatl have provided-a system of gearingforioperatilng a hoisting drum from an internal conibustion engine thativi-ll permit the eng-ine to operate continuously Without being stalled,when the load is applied. Y

designatesva slot in the lever 22 in which is adjustably connected thevrod or link 36 at one end and tothe carburetor 37 at its other end. 438is an internal combustion engine which 1s connected to the carburetor 37by means-of the gas supply pipe 39. l

The purpose of this connection is to feed a supply .of gas to theinternal .combustion engine When theload is applied, and, to shut it-oif Whenv'the load is Withdrawn.

That I claim is:

A hoisting mechanism comprising in combination, a driving and a drivenshaft ai ranged 1in axial alignment and one turning Within the other, acasing, bearings on the casing for lsupporting the said shafts, a sungear secured'to the driving shaftl and having an external bearingsurface, a plate member secured to the driven shaft and formed with lanvexternal. bearing surface, planet gears rotatablymounted on the platemember and meshing with the sun gear, a pair of disc plates rotatably'mounted on the external bearing of the-sun gear and the externalbearing of the said plate member, an internal gear ring secured betweenand tothe pair of disc plates, a brake'band located around the outersurface of the internal gear ring, a'belt connected to oneend of thebrake band and adjustably secured to a fixed part of the casing forsupporting the'brake band, ashaft, yan operating lever secured to theshaft, link connection between the other end ofthe Abrake band and theshaft, a hoisting drum lon the driven shaft, a brake drum secured tothe'driven shaft', a brake band on the outer surface of the brake drum,one end 'of the second nientioned 'brake band being connected to thecasing and its other end 'being connected to said "lever operatedshaft,the construction and arrangement being suchthat when the,

lever yand sha-ft is operated oneibrake band willv be tightened and theother gradually loosened fon the ring gear and brake vdrum respectively,and vice versa, whereby the load is gradually applied'and removed fromthe hoisting drum.' p i his ARTHUR L. DODGE..

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